Question

what is critical angle​

Answer 1

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Critical angle is defined as the angle of incidence that provides an angle of refraction of 90-degrees. Make particular note that thecritical angle is an angle of incidence value. For the water-air boundary, the critical angle is 48.6-degrees.

Answer 2

Explanation:

Critical angle is defined as the angle of incidence that provides an angle of refraction of 90-degrees. Make particular note that thecritical angle is an angle of incidence value. For the water-air boundary, the critical angle is 48.6-degrees..